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Genetic diversity and population structure of a global invader Mayweed chamomile (Anthemis cotula): management implications

Mayweed chamomile (Anthemis cotula) is a globally invasive, troublesome annual weed but knowledge of its genetic diversity, population structure in invaded regions and invasion patterns remains unstudied. Therefore, germplasm from 19 A. cotula populations (sites) from three geographically distinct i...

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Autores principales: Adhikari, Subodh, Revolinski, Samuel R, Eigenbrode, Sanford D, Burke, Ian C
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8403231/
https://www.ncbi.nlm.nih.gov/pubmed/34466213
http://dx.doi.org/10.1093/aobpla/plab049
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author Adhikari, Subodh
Revolinski, Samuel R
Eigenbrode, Sanford D
Burke, Ian C
author_facet Adhikari, Subodh
Revolinski, Samuel R
Eigenbrode, Sanford D
Burke, Ian C
author_sort Adhikari, Subodh
collection PubMed
description Mayweed chamomile (Anthemis cotula) is a globally invasive, troublesome annual weed but knowledge of its genetic diversity, population structure in invaded regions and invasion patterns remains unstudied. Therefore, germplasm from 19 A. cotula populations (sites) from three geographically distinct invaded regions: the Walla Walla Basin (located in southern Washington) and the Palouse (located in both northern Idaho and eastern Washington), Pacific Northwest, USA and Kashmir Valley, India were grown in the greenhouse for DNA extraction and sequencing. A total of 18 829 single-nucleotide polymorphisms were called and filtered for each of 89 samples. Pairwise F(ST), Nei’s genetic distance, heterozygosity, Wright’s inbreeding coefficient (F) and self-fertilization rates were estimated for populations within and among the three regions with a total of 19 populations comprised of 89 individuals. Overall measurements of genetic variation were low but significant among regions, populations and individuals. Despite the weak genetic structure, two main genetic clusters were evident, one comprised of populations from Palouse and Kashmir Valley, the other comprised of populations from the Walla Walla Basin. Significant selfing was observed in populations from the Walla Walla Basin and Palouse but not from Kashmir Valley, indicating that Mayweed chamomile in the Pacific Northwest, USA could persist with low pollinator or pollen donor densities. Although F(ST) values between the regions indicate Palouse populations are more closely related to Kashmir Valley than to Walla Walla Basin populations, based on Migrate-n analysis, panmixis was the most likely model, suggesting an unrestricted gene flow among all three regions. Our study indicated that Kashmir Valley populations either originated from or shared the origin with the Palouse populations, suggesting human-mediated migration of A. cotula between regions.
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spelling pubmed-84032312021-08-30 Genetic diversity and population structure of a global invader Mayweed chamomile (Anthemis cotula): management implications Adhikari, Subodh Revolinski, Samuel R Eigenbrode, Sanford D Burke, Ian C AoB Plants Studies Mayweed chamomile (Anthemis cotula) is a globally invasive, troublesome annual weed but knowledge of its genetic diversity, population structure in invaded regions and invasion patterns remains unstudied. Therefore, germplasm from 19 A. cotula populations (sites) from three geographically distinct invaded regions: the Walla Walla Basin (located in southern Washington) and the Palouse (located in both northern Idaho and eastern Washington), Pacific Northwest, USA and Kashmir Valley, India were grown in the greenhouse for DNA extraction and sequencing. A total of 18 829 single-nucleotide polymorphisms were called and filtered for each of 89 samples. Pairwise F(ST), Nei’s genetic distance, heterozygosity, Wright’s inbreeding coefficient (F) and self-fertilization rates were estimated for populations within and among the three regions with a total of 19 populations comprised of 89 individuals. Overall measurements of genetic variation were low but significant among regions, populations and individuals. Despite the weak genetic structure, two main genetic clusters were evident, one comprised of populations from Palouse and Kashmir Valley, the other comprised of populations from the Walla Walla Basin. Significant selfing was observed in populations from the Walla Walla Basin and Palouse but not from Kashmir Valley, indicating that Mayweed chamomile in the Pacific Northwest, USA could persist with low pollinator or pollen donor densities. Although F(ST) values between the regions indicate Palouse populations are more closely related to Kashmir Valley than to Walla Walla Basin populations, based on Migrate-n analysis, panmixis was the most likely model, suggesting an unrestricted gene flow among all three regions. Our study indicated that Kashmir Valley populations either originated from or shared the origin with the Palouse populations, suggesting human-mediated migration of A. cotula between regions. Oxford University Press 2021-08-27 /pmc/articles/PMC8403231/ /pubmed/34466213 http://dx.doi.org/10.1093/aobpla/plab049 Text en © The Author(s) 2021. Published by Oxford University Press on behalf of the Annals of Botany Company. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Studies
Adhikari, Subodh
Revolinski, Samuel R
Eigenbrode, Sanford D
Burke, Ian C
Genetic diversity and population structure of a global invader Mayweed chamomile (Anthemis cotula): management implications
title Genetic diversity and population structure of a global invader Mayweed chamomile (Anthemis cotula): management implications
title_full Genetic diversity and population structure of a global invader Mayweed chamomile (Anthemis cotula): management implications
title_fullStr Genetic diversity and population structure of a global invader Mayweed chamomile (Anthemis cotula): management implications
title_full_unstemmed Genetic diversity and population structure of a global invader Mayweed chamomile (Anthemis cotula): management implications
title_short Genetic diversity and population structure of a global invader Mayweed chamomile (Anthemis cotula): management implications
title_sort genetic diversity and population structure of a global invader mayweed chamomile (anthemis cotula): management implications
topic Studies
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8403231/
https://www.ncbi.nlm.nih.gov/pubmed/34466213
http://dx.doi.org/10.1093/aobpla/plab049
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